@article{Giddings2014,
author = {Giddings, L. and Nunley, J.M. and Schneebaum, A. and Zietz, J.},
title= {Birth cohort and the specialization gap between same-sex and different-sex couples},
year = {2014},
doi = {10.1007/s13524-013-0267-4},
journal = {Demography},
volume = {51},
number = {2},
pages = {509--534},
}